CN101434119B - Compression moulding forming method, reinforced plastic and special facing material for the method - Google Patents
Compression moulding forming method, reinforced plastic and special facing material for the method Download PDFInfo
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- CN101434119B CN101434119B CN2008101365873A CN200810136587A CN101434119B CN 101434119 B CN101434119 B CN 101434119B CN 2008101365873 A CN2008101365873 A CN 2008101365873A CN 200810136587 A CN200810136587 A CN 200810136587A CN 101434119 B CN101434119 B CN 101434119B
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- 238000000034 method Methods 0.000 title claims abstract description 36
- 239000000463 material Substances 0.000 title claims abstract description 26
- 239000002990 reinforced plastic Substances 0.000 title claims abstract description 26
- 238000000748 compression moulding Methods 0.000 title claims description 24
- 229920005989 resin Polymers 0.000 claims abstract description 76
- 239000011347 resin Substances 0.000 claims abstract description 76
- 238000003825 pressing Methods 0.000 claims abstract description 41
- 239000000945 filler Substances 0.000 claims abstract description 5
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 38
- 239000003795 chemical substances by application Substances 0.000 claims description 21
- 239000012752 auxiliary agent Substances 0.000 claims description 20
- 239000011256 inorganic filler Substances 0.000 claims description 19
- 229910003475 inorganic filler Inorganic materials 0.000 claims description 19
- 239000007822 coupling agent Substances 0.000 claims description 17
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical group OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 16
- 239000000206 moulding compound Substances 0.000 claims description 16
- 229920006337 unsaturated polyester resin Polymers 0.000 claims description 16
- 239000003365 glass fiber Substances 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 11
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 10
- 229910021502 aluminium hydroxide Inorganic materials 0.000 claims description 10
- 239000000843 powder Substances 0.000 claims description 10
- 238000002360 preparation method Methods 0.000 claims description 10
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical group [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 9
- OBETXYAYXDNJHR-SSDOTTSWSA-M (2r)-2-ethylhexanoate Chemical compound CCCC[C@@H](CC)C([O-])=O OBETXYAYXDNJHR-SSDOTTSWSA-M 0.000 claims description 8
- OBETXYAYXDNJHR-UHFFFAOYSA-N alpha-ethylcaproic acid Natural products CCCCC(CC)C(O)=O OBETXYAYXDNJHR-UHFFFAOYSA-N 0.000 claims description 8
- 239000002131 composite material Substances 0.000 claims description 8
- RUPAXCPQAAOIPB-UHFFFAOYSA-N tert-butyl formate Chemical compound CC(C)(C)OC=O RUPAXCPQAAOIPB-UHFFFAOYSA-N 0.000 claims description 8
- 239000000654 additive Substances 0.000 claims description 6
- 230000000996 additive effect Effects 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 238000007796 conventional method Methods 0.000 claims description 6
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 6
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 6
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims description 4
- 235000013539 calcium stearate Nutrition 0.000 claims description 4
- 239000008116 calcium stearate Substances 0.000 claims description 4
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 4
- 239000003999 initiator Substances 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 4
- 229920002554 vinyl polymer Polymers 0.000 claims description 4
- 239000004793 Polystyrene Substances 0.000 claims description 2
- 229920002223 polystyrene Polymers 0.000 claims description 2
- 229920002689 polyvinyl acetate Polymers 0.000 claims description 2
- 239000011118 polyvinyl acetate Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 238000000465 moulding Methods 0.000 abstract description 13
- 239000011152 fibreglass Substances 0.000 abstract description 9
- 239000002344 surface layer Substances 0.000 abstract 2
- 239000010410 layer Substances 0.000 abstract 1
- 239000004033 plastic Substances 0.000 abstract 1
- 239000003677 Sheet moulding compound Substances 0.000 description 14
- GJBRNHKUVLOCEB-UHFFFAOYSA-N tert-butyl benzenecarboperoxoate Chemical compound CC(C)(C)OOC(=O)C1=CC=CC=C1 GJBRNHKUVLOCEB-UHFFFAOYSA-N 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000002994 raw material Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000000977 initiatory effect Effects 0.000 description 4
- 229920006387 Vinylite Polymers 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- MNZAKDODWSQONA-UHFFFAOYSA-N 1-dibutylphosphorylbutane Chemical compound CCCCP(=O)(CCCC)CCCC MNZAKDODWSQONA-UHFFFAOYSA-N 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000012779 reinforcing material Substances 0.000 description 2
- FQFILJKFZCVHNH-UHFFFAOYSA-N tert-butyl n-[3-[(5-bromo-2-chloropyrimidin-4-yl)amino]propyl]carbamate Chemical compound CC(C)(C)OC(=O)NCCCNC1=NC(Cl)=NC=C1Br FQFILJKFZCVHNH-UHFFFAOYSA-N 0.000 description 2
- 229920006305 unsaturated polyester Polymers 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
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- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000000855 fungicidal effect Effects 0.000 description 1
- 201000010260 leiomyoma Diseases 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a reinforced plastic and a mould pressing and molding method thereof. Firstly, a special facing material is prepared; and prepared resin is pasted and coated on the surface of pape, is precured and dried to prepare the facing material; secondly, in a usual mould pressing step, the facing material is paved on the surface of a mould; and finally, usual mould plastic is input in order that the facing material forms a surface layer attached on the surface of a structural layer after mould pressing, thereby solving the problems that the manufactured reinforced plastic has poor appearance and quality and avoiding entering the surface layer of fiberglass and other fillers.
Description
Technical field
The present invention relates to a kind of compression-moulding methods of reinforced plastics, and a kind of fiberglass reinforced plastics that adopts this method to make, also relate to a kind of surface lining special-purpose in this compression-moulding methods.
Background technology
Fiberglass reinforced plastics is commonly called as fiberglass, is that interpolation fibroid reinforcing material is obtained in the thermosetting resin base material, adopts compression moulding technology to make usually.Methods such as that compression moulding comprises is laminated into type, compression molding, hand pasting forming, development at present are bulk or BMC die press technology for forming (BMC, DMC) and the sheet molding compound die press technology for forming (SMC) in the compression molding faster.
In reinforced plastics, unsaturated polyester (UP) is the most frequently used resin base material, and the metal oxide that adds glass fibre, inorganic filler and magnesia and so on therein is as reinforcing material.According to the different qualities of product, the addition of glass fibre floats between mass percent 20～35% usually.
Because in the molded curing process, resin base material can produce contraction, causes roughly, and glass fibre can enter superficial layer, makes that the outward appearance of goods is not good.In the bathroom industry, particularly when producing the light goods on A level surface, can adopt adding low profile material to reduce its shrinkage factor, but still can't avoid glass fibre to enter into the problem of superficial layer.
Also can improve its surface property at surface-coated one coating of finished product.If adopt the powdery moulding compound, then should before the mold pressing step, apply; If after mold pressing, apply again.But no matter be before the mold pressing step or after, all can additionally increase the operation of one coating, cause production cost to rise, technology is loaded down with trivial details.
In recent years, many researchers attempted to improve its surface property by making the content difference of filler in each layer SMC sheet stock.In theory, by reducing the content of glass fiber in the superficial layer, or adopt sheet stock, just can alleviate owing to glass fibre enters the color disorder that superficial layer causes in solidification process as superficial layer with colorful color and luster, improve apparent mass, even can reach the effect of imitative natural wood grain or stone material.But the actual production test proves this scheme and infeasible.Because in mold process, the unnecessary resin in surface can be extruded, and therefore still can't avoid glass fibre to enter superficial layer.And, in actual production, be difficult to control the uniformity of variant batch of product surface effect.Obtain certain improvement even if can control technological parameter by strictness, but its stone mode is very loaded down with trivial details, processing cost is very high, and qualification rate is but very low, has limited the development of this kind technology greatly.
Summary of the invention
One of purpose of the present invention is to provide a kind of compression-moulding methods of reinforced plastics.
For reaching this goal of the invention, the present invention takes following technical scheme:
A kind of compression-moulding methods of reinforced plastics, the step that comprises the preparation moulding compound and carry out mold pressing also comprises the step for preparing surface lining:
In unsaturated polyester resin, add multiple auxiliary agent, mix the formation resin paste, described auxiliary agent comprises: initator, inner pattern releasing agent applicable, inorganic filler, styrene, coupling agent, the quality of unsaturated polyester resin is decided to be 100 parts, and then the mass fraction of each auxiliary agent is respectively:
Initator 1～2;
Inner pattern releasing agent applicable 2～4;
Inorganic filler 60～150;
Styrene 3～15;
Coupling agent 1～2,
Described resin paste evenly is coated on the paper, under 105～130 degrees centigrade, carries out precuring and drying then, make the curing degree of described resin paste reach 80～85%, become described surface lining,
Described mold pressing step comprises the step that feeds intake, and in this feeds intake step, the described surface lining that makes is layered on the surface of mould, and the moulding compound that will adopt conventional method to make is dosed in the mould again, and the area that feeds intake is 50～100% of a goods frontal projected area,
After finishing the mold pressing step, described moulding compound forms by resin base material and the structure sheaf that glass fibre constituted that is dispersed in this base material, and described surface lining forms the superficial layer attached to described structure sheaf surface.
Described paper is water-based paper or body paper, and every square metre quality is 60～100 grams.Coated resin paste quality is 80～100 grams on every square metre paper.
It is 1～20 low shrinkage additive that described auxiliary agent also comprises mass fraction, and this low shrinkage additive is selected from least a in polyvinyl acetate, polystyrene, the polymethyl methacrylate.Described unsaturated polyester resin is isophthalic resin or vinyl.Described initator is Oxybenzene t-butyl formate/peroxidating 2 ethyl hexanoic acid tert-butyl ester composite initiator system, and the mass ratio of the Oxybenzene t-butyl formate and the peroxidating 2 ethyl hexanoic acid tert-butyl ester is (0.7～0.8): (0.3～0.2).Described inner pattern releasing agent applicable is zinc stearate or calcium stearate.Described filler is selected from particle diameter less than 13 microns aluminium hydroxide micro powder or the particle diameter talcum powder less than 18 microns.
The forming method that is proposed in the technique scheme only need just can be produced the good reinforced plastics of apparent mass through mold pressing procedure, and operation is economized, cost is low, technology controlling and process is simpler relatively.
The reinforced plastics that provides a kind of apparent mass good is provided two of purpose of the present invention, and this reinforced plastics is that employing technology side one disclosed compression-moulding methods makes.
For reaching this goal of the invention, the present invention takes following technical scheme:
Described reinforced plastics comprises by resin base material and the structure sheaf that glass fibre constituted that is dispersed in this base material, also comprises the superficial layer attached to described structure sheaf surface,
Described reinforced plastics adopts the method that comprises following steps to make:
A, employing conventional method prepare moulding compound;
B, preparation surface lining: in unsaturated polyester resin, add multiple auxiliary agent, mix the formation resin paste, described auxiliary agent comprises: initator, inner pattern releasing agent applicable, inorganic filler, styrene, coupling agent, the quality of unsaturated polyester resin is decided to be 100 parts, and then the mass fraction of each auxiliary agent is respectively:
Initator 1～2;
Inner pattern releasing agent applicable 2～4;
Inorganic filler 60～150;
Styrene 3～15;
Coupling agent 1～2,
Described resin paste evenly is coated on the paper, under 105～130 degrees centigrade, carries out precuring and drying then, make the curing degree of described resin paste reach 80～85%, become described surface lining,
C, adopt conventional method to carry out mold pressing, in this mold pressing step, comprise the step that feeds intake, in this feeds intake step, the described surface lining that makes is layered on the surface of mould, described moulding compound is dosed in the mould, the area that feeds intake is 50～100% of a goods frontal projected area again
After completing steps c, described moulding compound forms described structure sheaf, and described surface lining forms described superficial layer.
According to the reinforced plastics that such scheme is implemented, glass fibre can not mix its superficial layer, thereby has improved its apparent mass greatly.
Three of purpose of the present invention is to provide a kind of surface lining that is exclusively used in technical scheme one.
For reaching this goal of the invention, the present invention takes following technical scheme:
In unsaturated polyester resin, add multiple auxiliary agent, mix the formation resin paste, described auxiliary agent comprises: initator, inner pattern releasing agent applicable, inorganic filler, styrene, coupling agent, the quality of unsaturated polyester resin is decided to be 100 parts, and then the mass fraction of each auxiliary agent is respectively:
Initator 1～2;
Inner pattern releasing agent applicable 2～4;
Inorganic filler 60～150;
Styrene 3～15;
Coupling agent 1～2,
Described resin paste evenly is coated on the paper, under 105～130 degrees centigrade, carries out precuring and drying then, make the curing degree of described resin paste reach 80～85%, become described surface lining.
In common mold pressing step, adopt this surface lining to be layered on die surface, and then drop into common moulding compound, make after mold pressing, surface lining forms the superficial layer attached to the structure sheaf surface, so just can solve the not good problem of prepared reinforced plastics apparent mass, avoid fillers such as glass fibre to enter superficial layer.
Description of drawings
Accompanying drawing 1 is the cutaway view of reinforced plastics;
Wherein: 1, structure sheaf; 2, superficial layer.
The specific embodiment
Below in conjunction with drawings and Examples the specific embodiment of the present invention is described:
Embodiment 1:
Carry out the compression molding of fiberglass reinforced plastics according to following steps:
(1), according to following prescription (mass fraction) preparation resin paste:
Resin base material: vinylite 100;
Low shrinkage additive: polymethyl methacrylate (PMMA) 15;
Initator: peroxidized t-butyl perbenzoate (TBPB) 1;
Inner pattern releasing agent applicable: zinc stearate 2;
Inorganic filler: aluminium hydroxide micro powder 60;
Coupling agent 1.
With above-mentioned raw materials mix make resin paste after, add 6 parts of styrene again to regulate viscosity, resin paste is suitably diluted.
(2), above-mentioned resin paste evenly is coated on the body paper with color texture, the mass ratio of resin paste and body paper is roughly 1: 1.
(3), the body paper that will apply resin paste sends in the drying tunnel about 120 degrees centigrade and carries out precuring, guarantees that its curing degree reaches 80%, promptly makes the surface lining of mold pressing special use.
(4), mold pressing: what present embodiment will prepare is the wallboard of integral bathroom.In the step that feeds intake, the surface lining that makes at first is layered on the surface of mould, make its front towards mould, then sheet molding compound (SMC sheet stock) is layered in the back side of surface lining, the area that feeds intake is 60% of a finished product frontal projected area.Present embodiment adopts the 1000T forcing press to carry out mold pressing, and the temperature of mould positive and negative is respectively 137 degrees centigrade and 128 degrees centigrade, and molding pressure is selected 22Mpa, molding time 180 seconds, and the thickness of end article is 3 millimeters.After finishing, mold pressing carries out deburring, the flash of arrangement article periphery.
The apparent effect of the finished product that present embodiment obtained is fine, but slows down surperficial shrinkage factor with PMMA as low shrinkage additive, and its cost is higher.
Embodiment 2:
Carry out the compression molding of fiberglass reinforced plastics according to following steps:
(1), according to following prescription (mass fraction) preparation resin paste:
Resin base material: isophthalic resin 100;
Initator: peroxidized t-butyl perbenzoate (TBPB) 1;
Inner pattern releasing agent applicable: zinc stearate 2;
Inorganic filler: aluminium hydroxide micro powder 80;
Coupling agent 1.
With above-mentioned raw materials mix make resin paste after, add 8 parts of styrene again to regulate viscosity, resin paste is suitably diluted.
(2), above-mentioned resin paste evenly is coated on the body paper with color texture, the mass ratio of resin paste and body paper is roughly 1: 1.
(3), the body paper that will apply resin paste sends in the drying tunnel about 120 degrees centigrade and carries out precuring, guarantees that its curing degree reaches 80%, promptly makes the surface lining of mold pressing special use.
(4), mold pressing: in the step that feeds intake, the surface lining that makes at first is layered on the surface of mould, makes its front towards mould, then sheet molding compound (SMC sheet stock) is layered in the back side of surface lining, the area that feeds intake is 80% of a finished product frontal projected area.Present embodiment adopts the 1000T forcing press to carry out mold pressing, and the temperature of mould positive and negative is respectively 145 degrees centigrade and 138 degrees centigrade, and molding pressure is selected 18Mpa, molding time 175 seconds, and the thickness of end article is 3 millimeters.After finishing, mold pressing carries out deburring, the flash of arrangement article periphery.
The apparent effect of the finished product that present embodiment obtained is fine, but owing to the content of aluminium hydroxide micro powder in the resin paste is higher, causes the viscosity of resin paste also higher, must add more styrene and dilute, and just can slow down surperficial shrinkage factor.Because it is lower that aluminium hydroxide micro powder is compared with PMMA with cinnamic cost, therefore to compare with embodiment 1, the manufacturing cost of embodiment 2 declines to a great extent, and can be used for producing large-area decorative kind panel material.
Embodiment 3:
Carry out the compression molding of fiberglass reinforced plastics according to following steps:
(1), according to following prescription (mass fraction) preparation resin paste:
Resin base material: isophthalic resin 100;
Initator: peroxidized t-butyl perbenzoate (TBPB) 1;
Inner pattern releasing agent applicable: zinc stearate 4;
Inorganic filler: aluminium hydroxide micro powder 100;
Coupling agent 1.2.
With above-mentioned raw materials mix make resin paste after, add 9 parts of styrene again to regulate viscosity, resin paste is suitably diluted.
(2), above-mentioned resin paste evenly is coated on the body paper with color texture, the mass ratio of resin paste and body paper is roughly 1: 1.
(3), the body paper that will apply resin paste send in the drying tunnel about 120 degrees centigrade and carries out precuring, guarantees that its curing degree reaches 80%, promptly makes the surface lining of mold pressing special use.
(4), mold pressing: what present embodiment will prepare is the wallboard of integral bathroom.In the step that feeds intake, the surface lining that makes at first is layered on the surface of mould, make its front towards mould, then sheet molding compound (SMC sheet stock) is layered in the back side of surface lining, the area that feeds intake is 95% of a finished product frontal projected area.Present embodiment adopts the 1000T forcing press to carry out mold pressing, and the temperature of mould positive and negative is respectively 160 degrees centigrade and 150 degrees centigrade, and molding pressure is selected 20Mpa, molding time 170 seconds, and the thickness of end article is 3 millimeters.After finishing, mold pressing carries out deburring, the flash of arrangement article periphery.
Compare with embodiment 2, the molding temperature height of embodiment 3, cured block has shortened the molding time of mold pressing step, can enhance productivity.
Embodiment 4:
Carry out the compression molding of fiberglass reinforced plastics according to following steps:
(1), according to following prescription (mass fraction) preparation resin paste:
Resin base material: vinylite 100;
Inner pattern releasing agent applicable: zinc stearate 3;
Inorganic filler: aluminium hydroxide micro powder 120;
Coupling agent 1.5.
Described composite initiation system is that 1.1: 0.4 peroxidized t-butyl perbenzoate (TBPB) is formed with the peroxidating thylhexoic acid tert-butyl ester (TBPO) by mass ratio.
With above-mentioned raw materials mix make resin paste after, add 12 parts of styrene again to regulate viscosity, resin paste is suitably diluted.
(2), above-mentioned resin paste evenly is coated on the body paper with color texture, the mass ratio of resin paste and body paper is roughly 1: 1.
(3), the body paper that will apply resin paste sends in the drying tunnel about 120 degrees centigrade and carries out precuring, guarantees that its curing degree reaches 80%, promptly makes the surface lining of mold pressing special use.
(4), mold pressing: what present embodiment will prepare is the wallboard of integral bathroom.In the step that feeds intake, the surface lining that makes at first is layered on the surface of mould, make its front towards mould, then sheet molding compound (SMC sheet stock) is layered in the back side of surface lining, the area that feeds intake is 90% of a finished product frontal projected area.Present embodiment adopts the 1000T forcing press to carry out mold pressing, and the temperature of mould positive and negative is respectively 150 degrees centigrade and 142 degrees centigrade, and molding pressure is selected 25Mpa, molding time 165 seconds, and the thickness of end article is 3 millimeters.After finishing, mold pressing carries out deburring, the flash of arrangement article periphery.
In the present embodiment, aluminium hydroxide micro powder, styrene-content in the resin paste are all very high, with this shrinkage factor of regulating product surface, improve apparent mass.As resin base material, ageing-resistant, waterproof, the fungicidal properties of its goods are all relatively good with vinylite, and mechanical strength also obviously improves.
Embodiment 5:
Carry out the compression molding of fiberglass reinforced plastics according to following steps:
(1), according to following prescription (mass fraction) preparation resin paste:
Resin base material: isophthalic resin 100;
Composite initiation system 1;
Inner pattern releasing agent applicable: zinc stearate 3;
Inorganic filler: aluminium hydroxide micro powder 150;
Coupling agent 1.2.
Described composite initiation system is that 1.1: 0.4 peroxidized t-butyl perbenzoate (TBPB) is formed with the peroxidating thylhexoic acid tert-butyl ester (TBPO) by mass ratio.
With above-mentioned raw materials mix make resin paste after, add 15 parts of styrene again to regulate viscosity, resin paste is suitably diluted.
(2), above-mentioned resin paste evenly is coated on the body paper with color texture, the mass ratio of resin paste and body paper is roughly 1: 1.
(3), the body paper that will apply resin paste sends in the drying tunnel about 120 degrees centigrade and carries out precuring, guarantees that its curing degree reaches 80%, promptly makes the surface lining of mold pressing special use.
(4), mold pressing: what present embodiment will prepare is the wallboard of integral bathroom.In the step that feeds intake, the surface lining that makes at first is layered on the surface of mould, make its front towards mould, then sheet molding compound (SMC sheet stock) is layered in the back side of surface lining, the area that feeds intake is 90% of a finished product frontal projected area.Present embodiment adopts the 1000T forcing press to carry out mold pressing, and the temperature of mould positive and negative is respectively 150 degrees centigrade and 142 degrees centigrade, and molding pressure is selected 22Mpa, molding time 170 seconds, and the thickness of end article is 3 millimeters.After finishing, mold pressing carries out deburring, the flash of arrangement article periphery.
In the present embodiment, adopt talcum powder as inorganic filler, and content is very high, so the viscosity of resin paste is also very high, dilutes so need to add more styrene.The cost that the employing talcum powder is regulated surperficial shrinkage factor is lower.
Accompanying drawing 1 is the cutaway view of reinforced plastics goods.The reinforced plastics that adopts method of the present invention to implement possesses structure sheaf 1 and superficial layer 2.Structure sheaf 1 adopts the moulding compound mold pressing of commonsense method preparation to form, and comprises the various moulding compounds of BMC/SMC/DMC.2 of superficial layers are pressed into by surface lining.Glass fibre all is present in the structure sheaf 1, can not infiltrate superficial layer 2 in mold process, therefore can not have influence on the apparent mass in goods front owing to the existence of glass fibre.
And adopt paper as the raw material of making surface lining, can make the finished product that the surface possesses various decorative patterns, perhaps reach the effect of true wood grain and stone material with chromatic pattern or stamp.And in manufacture process, need not to increase extra surface coating treatment process, and shortened manufacturing process greatly, saved cost.
As mentioned above, we are illustrated according to aim of the present invention fully, but the present invention is not limited to the foregoing description and implementation method.The practitioner of correlative technology field can carry out different variations and enforcement in the scope of technological thought permission of the present invention.
Claims (7)
1. the compression-moulding methods of a reinforced plastics comprises preparation moulding compound and the step of carrying out mold pressing, and it is characterized in that: this compression-moulding methods also comprises the step for preparing surface lining:
In unsaturated polyester resin, add multiple auxiliary agent, mix the formation resin paste, described auxiliary agent comprises: initator, inner pattern releasing agent applicable, inorganic filler, styrene, coupling agent, the quality of unsaturated polyester resin is decided to be 100 parts, and then the mass fraction of each auxiliary agent is respectively:
Initator 1～2;
Inner pattern releasing agent applicable 2～4;
Inorganic filler 60～150;
Styrene 3～15;
Coupling agent 1～2,
Described unsaturated polyester resin is isophthalic resin or vinyl;
Described initator is Oxybenzene t-butyl formate/peroxidating 2 ethyl hexanoic acid tert-butyl ester composite initiator system, and the mass ratio of the Oxybenzene t-butyl formate and the peroxidating 2 ethyl hexanoic acid tert-butyl ester is (0.7～0.8): (0.3～0.2);
Described inner pattern releasing agent applicable is zinc stearate or calcium stearate,
Described resin paste evenly is coated on the paper, under 105～130 degrees centigrade, carries out precuring and drying then, make the curing degree of described resin paste reach 80～85%, become described surface lining,
Described mold pressing step comprises the step that feeds intake, and in this feeds intake step, the described surface lining that makes is layered on the surface of mould, and the moulding compound that will adopt conventional method to make is dosed in the mould again, and the area that feeds intake is 50～100% of a goods frontal projected area,
After finishing the mold pressing step, described moulding compound forms by resin base material and the structure sheaf that glass fibre constituted (1) that is dispersed in this base material, and described surface lining forms the superficial layer (2) attached to described structure sheaf surface.
2. the compression-moulding methods of reinforced plastics according to claim 1, it is characterized in that: described paper is water-based paper or body paper, and every square metre quality is 60～100 grams.
3. the compression-moulding methods of reinforced plastics according to claim 1, it is characterized in that: it is 1～20 low shrinkage additive that described auxiliary agent also comprises mass fraction, and this low shrinkage additive is selected from least a in polyvinyl acetate, polystyrene, the polymethyl methacrylate.
4. the compression-moulding methods of reinforced plastics according to claim 1 is characterized in that: coated resin paste quality is 80～100 grams on every square metre paper.
5. the compression-moulding methods of reinforced plastics according to claim 1 is characterized in that: described filler is selected from particle diameter less than 13 microns aluminium hydroxide micro powder or the particle diameter talcum powder less than 18 microns.
6. reinforced plastics of making by compression-moulding methods, comprise by resin base material and the structure sheaf that glass fibre constituted (1) that is dispersed in this base material, it is characterized in that: this reinforced plastics also comprises the superficial layer (2) attached to described structure sheaf (1) surface
Described reinforced plastics adopts the method that comprises following steps to make:
A, employing conventional method prepare moulding compound;
B, preparation surface lining: in unsaturated polyester resin, add multiple auxiliary agent, mix the formation resin paste, described auxiliary agent comprises: initator, inner pattern releasing agent applicable, inorganic filler, styrene, coupling agent, the quality of unsaturated polyester resin is decided to be 100 parts, and then the mass fraction of each auxiliary agent is respectively:
Initator 1～2;
Inner pattern releasing agent applicable 2～4;
Inorganic filler 60～150;
Styrene 3～15;
Coupling agent 1～2,
Described unsaturated polyester resin is isophthalic resin or vinyl;
Described initator is Oxybenzene t-butyl formate/peroxidating 2 ethyl hexanoic acid tert-butyl ester composite initiator system, and the mass ratio of the Oxybenzene t-butyl formate and the peroxidating 2 ethyl hexanoic acid tert-butyl ester is (0.7～0.8): (0.3～0.2);
Described inner pattern releasing agent applicable is zinc stearate or calcium stearate,
Described resin paste evenly is coated on the paper, under 105～130 degrees centigrade, carries out precuring and drying then, make the curing degree of described resin paste reach 80～85%, become described surface lining,
C, adopt conventional method to carry out mold pressing, in this mold pressing step, comprise the step that feeds intake, in this feeds intake step, the described surface lining that makes is layered on the surface of mould, described moulding compound is dosed in the mould, the area that feeds intake is 50～100% of a goods frontal projected area again
After completing steps c, described moulding compound forms described structure sheaf (1), and described surface lining forms described superficial layer (2).
7. surface lining special-purpose in compression-moulding methods as claimed in claim 1, it is characterized in that: described surface lining adopts following method to make:
In unsaturated polyester resin, add multiple auxiliary agent, mix the formation resin paste, described auxiliary agent comprises: initator, inner pattern releasing agent applicable, inorganic filler, styrene, coupling agent, the quality of unsaturated polyester resin is decided to be 100 parts, and then the mass fraction of each auxiliary agent is respectively:
Initator 1～2;
Inner pattern releasing agent applicable 2～4;
Inorganic filler 60～150;
Styrene 3～15;
Coupling agent 1～2,
Described unsaturated polyester resin is isophthalic resin or vinyl;
Described initator is Oxybenzene t-butyl formate/peroxidating 2 ethyl hexanoic acid tert-butyl ester composite initiator system, and the mass ratio of the Oxybenzene t-butyl formate and the peroxidating 2 ethyl hexanoic acid tert-butyl ester is (0.7～0.8): (0.3～0.2);
Described inner pattern releasing agent applicable is zinc stearate or calcium stearate,
Described resin paste evenly is coated on the paper, under 105～130 degrees centigrade, carries out precuring and drying then, make the curing degree of described resin paste reach 80～85%, become described surface lining.
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| CN101953651B (en) * | 2009-12-21 | 2012-05-23 | 佛山市沃尔曼洁具有限公司 | Bathroom chassis and manufacturing method thereof |
| CN102092163B (en) * | 2010-12-09 | 2013-07-31 | 苏州科逸住宅设备股份有限公司 | Glassfibre reinforced plastics and preparation method thereof |
| CN102364694B (en) * | 2011-11-01 | 2015-06-03 | 杭州福膜新材料科技有限公司 | Solar battery back plate and solar battery |
| CN102615756B (en) * | 2012-03-23 | 2015-04-15 | 科勒(中国)投资有限公司 | Compression molding method for molding compound |
| CN103009718A (en) * | 2012-12-21 | 2013-04-03 | 苏州科逸住宅设备股份有限公司 | UV veneer wallboard and manufacturing process thereof |
| CN104890173B (en) * | 2015-05-30 | 2018-03-16 | 徐进 | A kind of preparation method of bicolor melamine |
| CN105694795B (en) * | 2016-01-28 | 2020-04-07 | 苏州科逸住宅设备股份有限公司 | Wallboard for integral bathroom and preparation method thereof |
| CN111005520B (en) * | 2019-10-28 | 2021-04-23 | 苏州科硕住宅科技有限公司 | Preparation method of nano antibacterial wallboard and nano antibacterial wallboard |
| CN114482540B (en) * | 2021-12-28 | 2023-06-20 | 福建建工建材科技开发有限公司 | Composite demolding process for UHPC clean water facing |
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